1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
Quickplot - an interactive 2D plotter
Copyright (C) 1998-2011 Lance Arsenault
This file is part of Quickplot.
Quickplot is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
Quickplot is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quickplot. If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE
#include <ctype.h>
#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
#include <errno.h>
#include "quickplot.h"
#include "config.h"
#include "qp.h"
#include "debug.h"
#include "spew.h"
#include "term_color.h"
#include "list.h"
#include "channel.h"
#include "channel_double.h"
#ifdef DMALLOC
# include "dmalloc.h"
#endif
/* Gets doubles ignoring any chars that cannot
* be part of a decimal number.
* +/-NAN +/-INF are valid doubles to get.
* returns 1 if gets a double
* returns 0 if there is no more doubles to get
*/
static inline
int get_next_double(double *val, char **line)
{
char *s, *ptr;
ASSERT(line);
ASSERT(val);
if(**line == '\0') return 0;
s = ptr = *line;
while(*s)
{
*val = strtod(s, &ptr);
if(s != ptr)
{
*line = ptr;
return 1;
}
++s;
}
return 0;
}
/* returns: 0 line was skipped or empty
* 1 got data */
int qp_source_parse_doubles(struct qp_source *source, char *line_in)
{
char *s, *line;
struct qp_channel **c;
double value;
line = line_in;
if(!line_in || !line_in[0])
return 0;
/* take off any ending '\n' or '\r' */
for(s = &line[strlen(line)-1];
s >= line && (*s == '\n' || *s == '\r');
++s) *s = '\0';
//DEBUG("parsing line: %s\n", line);
for(; *line && isspace(*line); ++line);
if(line[0] == '\0' ||
(line[0] >= '!' && line[0] <= ')') ||
line[0] == '/' ||
(line[0] >= '<' && line[0] <= '@') ||
line[0] == 'C' ||
line[0] == 'c')
return 0;
if(!get_next_double(&value, &line))
return 0;
c = source->channels;
do
{
if(!(*c))
{
struct qp_channel *new_chan;
new_chan = qp_channel_create(QP_CHANNEL_FORM_SERIES, QP_TYPE_DOUBLE);
ASSERT(new_chan);
ASSERT(new_chan->form == QP_CHANNEL_FORM_SERIES);
ASSERT(new_chan->value_type == QP_TYPE_DOUBLE);
ASSERT(new_chan->series.arrays);
++source->num_channels;
source->channels = (struct qp_channel **)
qp_realloc(source->channels,
(source->num_channels+1)*sizeof(struct qp_channel*));
source->channels[source->num_channels-1] = new_chan;
source->channels[source->num_channels] = NULL;
c = source->channels + source->num_channels-1;
if(source->num_values) /* we have other
channels with data */
{
ASSERT(source->num_channels > 1);
/* We pad the top of this channel with blank
* values to make it have the same number
* of values as the other channels. */
struct qp_channel *first_chan;
size_t len;
/* get the first channel without moving
* the list pointer. */
first_chan = *(source->channels);
ASSERT(first_chan);
len = qp_channel_series_length(first_chan) - 1;
while(len--)
/* put len blank values in the begining */
qp_channel_series_double_append(new_chan, NAN);
}
}
qp_channel_series_double_append(*c, value);
++c;
} while(get_next_double(&value, &line));
/* If there are any more channels with no values from
* this line than put the value DOUBLE_NAN in those
* channels. */
while(*c)
qp_channel_series_double_append(*(c++), NAN);
++(source->num_values);
return 1; /* got data */
}
|
